author | chegar |
Fri, 08 May 2015 11:02:33 +0100 | |
changeset 30436 | 17827057ef5a |
parent 30048 | 3424bede284d |
child 32992 | 19ed8781c2ba |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2003, 2015, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* @test |
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* @library /lib/testlibrary/ |
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* @build jdk.testlibrary.* |
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* @run main IeeeRecommendedTests |
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* @bug 4860891 4826732 4780454 4939441 4826652 8078672 |
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* @summary Tests for IEEE 754[R] recommended functions and similar methods (use -Dseed=X to set PRNG seed) |
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* @author Joseph D. Darcy |
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* @key randomness |
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*/ |
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import jdk.testlibrary.RandomFactory; |
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|
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public class IeeeRecommendedTests { |
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private IeeeRecommendedTests(){} |
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static final float NaNf = Float.NaN; |
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static final double NaNd = Double.NaN; |
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static final float infinityF = Float.POSITIVE_INFINITY; |
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static final double infinityD = Double.POSITIVE_INFINITY; |
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static final float Float_MAX_VALUEmm = 0x1.fffffcP+127f; |
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static final float Float_MAX_SUBNORMAL = 0x0.fffffeP-126f; |
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static final float Float_MAX_SUBNORMALmm = 0x0.fffffcP-126f; |
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static final double Double_MAX_VALUEmm = 0x1.ffffffffffffeP+1023; |
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static final double Double_MAX_SUBNORMAL = 0x0.fffffffffffffP-1022; |
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static final double Double_MAX_SUBNORMALmm = 0x0.ffffffffffffeP-1022; |
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// Initialize shared random number generator |
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static java.util.Random rand = RandomFactory.getRandom(); |
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/** |
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* Returns a floating-point power of two in the normal range. |
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*/ |
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static double powerOfTwoD(int n) { |
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return Double.longBitsToDouble((((long)n + (long)Double.MAX_EXPONENT) << |
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(DoubleConsts.SIGNIFICAND_WIDTH-1)) |
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& DoubleConsts.EXP_BIT_MASK); |
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} |
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/** |
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* Returns a floating-point power of two in the normal range. |
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*/ |
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static float powerOfTwoF(int n) { |
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return Float.intBitsToFloat(((n + Float.MAX_EXPONENT) << |
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(FloatConsts.SIGNIFICAND_WIDTH-1)) |
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& FloatConsts.EXP_BIT_MASK); |
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} |
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/* ******************** getExponent tests ****************************** */ |
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/* |
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* The tests for getExponent should test the special values (NaN, +/- |
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* infinity, etc.), test the endpoints of each binade (set of |
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* floating-point values with the same exponent), and for good |
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* measure, test some random values within each binade. Testing |
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* the endpoints of each binade includes testing both positive and |
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* negative numbers. Subnormal values with different normalized |
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* exponents should be tested too. Both Math and StrictMath |
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* methods should return the same results. |
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*/ |
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/* |
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* Test Math.getExponent and StrictMath.getExponent with +d and -d. |
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*/ |
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static int testGetExponentCase(float f, int expected) { |
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float minus_f = -f; |
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int failures=0; |
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failures+=Tests.test("Math.getExponent(float)", f, |
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Math.getExponent(f), expected); |
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failures+=Tests.test("Math.getExponent(float)", minus_f, |
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Math.getExponent(minus_f), expected); |
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failures+=Tests.test("StrictMath.getExponent(float)", f, |
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StrictMath.getExponent(f), expected); |
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failures+=Tests.test("StrictMath.getExponent(float)", minus_f, |
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StrictMath.getExponent(minus_f), expected); |
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return failures; |
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} |
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/* |
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* Test Math.getExponent and StrictMath.getExponent with +d and -d. |
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*/ |
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static int testGetExponentCase(double d, int expected) { |
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double minus_d = -d; |
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int failures=0; |
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failures+=Tests.test("Math.getExponent(double)", d, |
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Math.getExponent(d), expected); |
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failures+=Tests.test("Math.getExponent(double)", minus_d, |
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Math.getExponent(minus_d), expected); |
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failures+=Tests.test("StrictMath.getExponent(double)", d, |
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StrictMath.getExponent(d), expected); |
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failures+=Tests.test("StrictMath.getExponent(double)", minus_d, |
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StrictMath.getExponent(minus_d), expected); |
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return failures; |
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} |
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public static int testFloatGetExponent() { |
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int failures = 0; |
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float [] specialValues = {NaNf, |
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Float.POSITIVE_INFINITY, |
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+0.0f, |
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+1.0f, |
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+2.0f, |
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+16.0f, |
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+Float.MIN_VALUE, |
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+Float_MAX_SUBNORMAL, |
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+Float.MIN_NORMAL, |
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+Float.MAX_VALUE |
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}; |
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int [] specialResults = {Float.MAX_EXPONENT + 1, // NaN results |
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Float.MAX_EXPONENT + 1, // Infinite results |
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Float.MIN_EXPONENT - 1, // Zero results |
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0, |
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1, |
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4, |
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Float.MIN_EXPONENT - 1, |
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-Float.MAX_EXPONENT, |
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Float.MIN_EXPONENT, |
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Float.MAX_EXPONENT |
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}; |
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// Special value tests |
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for(int i = 0; i < specialValues.length; i++) { |
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failures += testGetExponentCase(specialValues[i], specialResults[i]); |
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} |
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// Normal exponent tests |
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for(int i = Float.MIN_EXPONENT; i <= Float.MAX_EXPONENT; i++) { |
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int result; |
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// Create power of two |
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float po2 = powerOfTwoF(i); |
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failures += testGetExponentCase(po2, i); |
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// Generate some random bit patterns for the significand |
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for(int j = 0; j < 10; j++) { |
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int randSignif = rand.nextInt(); |
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float randFloat; |
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randFloat = Float.intBitsToFloat( // Exponent |
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(Float.floatToIntBits(po2)& |
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(~FloatConsts.SIGNIF_BIT_MASK)) | |
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// Significand |
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(randSignif & |
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FloatConsts.SIGNIF_BIT_MASK) ); |
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failures += testGetExponentCase(randFloat, i); |
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} |
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if (i > Float.MIN_EXPONENT) { |
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float po2minus = Math.nextAfter(po2, |
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Float.NEGATIVE_INFINITY); |
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failures += testGetExponentCase(po2minus, i-1); |
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} |
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} |
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// Subnormal exponent tests |
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/* |
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* Start with MIN_VALUE, left shift, test high value, low |
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* values, and random in between. |
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* |
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* Use nextAfter to calculate, high value of previous binade, |
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* loop count i will indicate how many random bits, if any are |
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* needed. |
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*/ |
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float top=Float.MIN_VALUE; |
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for( int i = 1; |
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i < FloatConsts.SIGNIFICAND_WIDTH; |
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i++, top *= 2.0f) { |
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failures += testGetExponentCase(top, |
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Float.MIN_EXPONENT - 1); |
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// Test largest value in next smaller binade |
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if (i >= 3) {// (i == 1) would test 0.0; |
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// (i == 2) would just retest MIN_VALUE |
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testGetExponentCase(Math.nextAfter(top, 0.0f), |
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Float.MIN_EXPONENT - 1); |
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if( i >= 10) { |
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// create a bit mask with (i-1) 1's in the low order |
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// bits |
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int mask = ~((~0)<<(i-1)); |
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float randFloat = Float.intBitsToFloat( // Exponent |
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Float.floatToIntBits(top) | |
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// Significand |
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(rand.nextInt() & mask ) ) ; |
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failures += testGetExponentCase(randFloat, |
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Float.MIN_EXPONENT - 1); |
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} |
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} |
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} |
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return failures; |
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} |
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public static int testDoubleGetExponent() { |
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int failures = 0; |
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double [] specialValues = {NaNd, |
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infinityD, |
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+0.0, |
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+1.0, |
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+2.0, |
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+16.0, |
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+Double.MIN_VALUE, |
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+Double_MAX_SUBNORMAL, |
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+Double.MIN_NORMAL, |
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+Double.MAX_VALUE |
244 |
}; |
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int [] specialResults = {Double.MAX_EXPONENT + 1, // NaN results |
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Double.MAX_EXPONENT + 1, // Infinite results |
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Double.MIN_EXPONENT - 1, // Zero results |
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0, |
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1, |
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4, |
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Double.MIN_EXPONENT - 1, |
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-Double.MAX_EXPONENT, |
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Double.MIN_EXPONENT, |
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Double.MAX_EXPONENT |
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}; |
257 |
||
258 |
// Special value tests |
|
259 |
for(int i = 0; i < specialValues.length; i++) { |
|
260 |
failures += testGetExponentCase(specialValues[i], specialResults[i]); |
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261 |
} |
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262 |
||
263 |
||
264 |
// Normal exponent tests |
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for(int i = Double.MIN_EXPONENT; i <= Double.MAX_EXPONENT; i++) { |
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int result; |
267 |
||
268 |
// Create power of two |
|
269 |
double po2 = powerOfTwoD(i); |
|
270 |
||
271 |
failures += testGetExponentCase(po2, i); |
|
272 |
||
273 |
// Generate some random bit patterns for the significand |
|
274 |
for(int j = 0; j < 10; j++) { |
|
275 |
long randSignif = rand.nextLong(); |
|
276 |
double randFloat; |
|
277 |
||
278 |
randFloat = Double.longBitsToDouble( // Exponent |
|
279 |
(Double.doubleToLongBits(po2)& |
|
280 |
(~DoubleConsts.SIGNIF_BIT_MASK)) | |
|
281 |
// Significand |
|
282 |
(randSignif & |
|
283 |
DoubleConsts.SIGNIF_BIT_MASK) ); |
|
284 |
||
285 |
failures += testGetExponentCase(randFloat, i); |
|
286 |
} |
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if (i > Double.MIN_EXPONENT) { |
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double po2minus = Math.nextAfter(po2, |
1826 | 290 |
Double.NEGATIVE_INFINITY); |
291 |
failures += testGetExponentCase(po2minus, i-1); |
|
292 |
} |
|
293 |
} |
|
294 |
||
295 |
// Subnormal exponent tests |
|
296 |
||
297 |
/* |
|
298 |
* Start with MIN_VALUE, left shift, test high value, low |
|
299 |
* values, and random in between. |
|
300 |
* |
|
301 |
* Use nextAfter to calculate, high value of previous binade; |
|
302 |
* loop count i will indicate how many random bits, if any are |
|
303 |
* needed. |
|
304 |
*/ |
|
305 |
||
306 |
double top=Double.MIN_VALUE; |
|
307 |
for( int i = 1; |
|
308 |
i < DoubleConsts.SIGNIFICAND_WIDTH; |
|
309 |
i++, top *= 2.0f) { |
|
310 |
||
311 |
failures += testGetExponentCase(top, |
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312 |
Double.MIN_EXPONENT - 1); |
1826 | 313 |
|
314 |
// Test largest value in next smaller binade |
|
315 |
if (i >= 3) {// (i == 1) would test 0.0; |
|
316 |
// (i == 2) would just retest MIN_VALUE |
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testGetExponentCase(Math.nextAfter(top, 0.0), |
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318 |
Double.MIN_EXPONENT - 1); |
1826 | 319 |
|
320 |
if( i >= 10) { |
|
321 |
// create a bit mask with (i-1) 1's in the low order |
|
322 |
// bits |
|
323 |
long mask = ~((~0L)<<(i-1)); |
|
324 |
double randFloat = Double.longBitsToDouble( // Exponent |
|
325 |
Double.doubleToLongBits(top) | |
|
326 |
// Significand |
|
327 |
(rand.nextLong() & mask ) ) ; |
|
328 |
||
329 |
failures += testGetExponentCase(randFloat, |
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|
330 |
Double.MIN_EXPONENT - 1); |
1826 | 331 |
} |
332 |
} |
|
333 |
} |
|
334 |
||
335 |
return failures; |
|
336 |
} |
|
337 |
||
338 |
||
339 |
/* ******************** nextAfter tests ****************************** */ |
|
340 |
||
341 |
static int testNextAfterCase(float start, double direction, float expected) { |
|
342 |
int failures=0; |
|
343 |
float minus_start = -start; |
|
344 |
double minus_direction = -direction; |
|
345 |
float minus_expected = -expected; |
|
346 |
||
347 |
failures+=Tests.test("Math.nextAfter(float,double)", start, direction, |
|
348 |
Math.nextAfter(start, direction), expected); |
|
349 |
failures+=Tests.test("Math.nextAfter(float,double)", minus_start, minus_direction, |
|
350 |
Math.nextAfter(minus_start, minus_direction), minus_expected); |
|
351 |
||
352 |
failures+=Tests.test("StrictMath.nextAfter(float,double)", start, direction, |
|
353 |
StrictMath.nextAfter(start, direction), expected); |
|
354 |
failures+=Tests.test("StrictMath.nextAfter(float,double)", minus_start, minus_direction, |
|
355 |
StrictMath.nextAfter(minus_start, minus_direction), minus_expected); |
|
356 |
return failures; |
|
357 |
} |
|
358 |
||
359 |
static int testNextAfterCase(double start, double direction, double expected) { |
|
360 |
int failures=0; |
|
361 |
||
362 |
double minus_start = -start; |
|
363 |
double minus_direction = -direction; |
|
364 |
double minus_expected = -expected; |
|
365 |
||
366 |
failures+=Tests.test("Math.nextAfter(double,double)", start, direction, |
|
367 |
Math.nextAfter(start, direction), expected); |
|
368 |
failures+=Tests.test("Math.nextAfter(double,double)", minus_start, minus_direction, |
|
369 |
Math.nextAfter(minus_start, minus_direction), minus_expected); |
|
370 |
||
371 |
failures+=Tests.test("StrictMath.nextAfter(double,double)", start, direction, |
|
372 |
StrictMath.nextAfter(start, direction), expected); |
|
373 |
failures+=Tests.test("StrictMath.nextAfter(double,double)", minus_start, minus_direction, |
|
374 |
StrictMath.nextAfter(minus_start, minus_direction), minus_expected); |
|
375 |
return failures; |
|
376 |
} |
|
377 |
||
378 |
public static int testFloatNextAfter() { |
|
379 |
int failures=0; |
|
380 |
||
381 |
/* |
|
382 |
* Each row of the testCases matrix represents one test case |
|
383 |
* for nexAfter; given the input of the first two columns, the |
|
384 |
* result in the last column is expected. |
|
385 |
*/ |
|
386 |
float [][] testCases = { |
|
387 |
{NaNf, NaNf, NaNf}, |
|
388 |
{NaNf, 0.0f, NaNf}, |
|
389 |
{0.0f, NaNf, NaNf}, |
|
390 |
{NaNf, infinityF, NaNf}, |
|
391 |
{infinityF, NaNf, NaNf}, |
|
392 |
||
393 |
{infinityF, infinityF, infinityF}, |
|
394 |
{infinityF, -infinityF, Float.MAX_VALUE}, |
|
395 |
{infinityF, 0.0f, Float.MAX_VALUE}, |
|
396 |
||
397 |
{Float.MAX_VALUE, infinityF, infinityF}, |
|
398 |
{Float.MAX_VALUE, -infinityF, Float_MAX_VALUEmm}, |
|
399 |
{Float.MAX_VALUE, Float.MAX_VALUE, Float.MAX_VALUE}, |
|
400 |
{Float.MAX_VALUE, 0.0f, Float_MAX_VALUEmm}, |
|
401 |
||
402 |
{Float_MAX_VALUEmm, Float.MAX_VALUE, Float.MAX_VALUE}, |
|
403 |
{Float_MAX_VALUEmm, infinityF, Float.MAX_VALUE}, |
|
404 |
{Float_MAX_VALUEmm, Float_MAX_VALUEmm, Float_MAX_VALUEmm}, |
|
405 |
||
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
406 |
{Float.MIN_NORMAL, infinityF, Float.MIN_NORMAL+ |
1826 | 407 |
Float.MIN_VALUE}, |
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
408 |
{Float.MIN_NORMAL, -infinityF, Float_MAX_SUBNORMAL}, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
409 |
{Float.MIN_NORMAL, 1.0f, Float.MIN_NORMAL+ |
1826 | 410 |
Float.MIN_VALUE}, |
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
411 |
{Float.MIN_NORMAL, -1.0f, Float_MAX_SUBNORMAL}, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
412 |
{Float.MIN_NORMAL, Float.MIN_NORMAL, Float.MIN_NORMAL}, |
1826 | 413 |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
414 |
{Float_MAX_SUBNORMAL, Float.MIN_NORMAL, Float.MIN_NORMAL}, |
1826 | 415 |
{Float_MAX_SUBNORMAL, Float_MAX_SUBNORMAL, Float_MAX_SUBNORMAL}, |
416 |
{Float_MAX_SUBNORMAL, 0.0f, Float_MAX_SUBNORMALmm}, |
|
417 |
||
418 |
{Float_MAX_SUBNORMALmm, Float_MAX_SUBNORMAL, Float_MAX_SUBNORMAL}, |
|
419 |
{Float_MAX_SUBNORMALmm, 0.0f, Float_MAX_SUBNORMALmm-Float.MIN_VALUE}, |
|
420 |
{Float_MAX_SUBNORMALmm, Float_MAX_SUBNORMALmm, Float_MAX_SUBNORMALmm}, |
|
421 |
||
422 |
{Float.MIN_VALUE, 0.0f, 0.0f}, |
|
423 |
{-Float.MIN_VALUE, 0.0f, -0.0f}, |
|
424 |
{Float.MIN_VALUE, Float.MIN_VALUE, Float.MIN_VALUE}, |
|
425 |
{Float.MIN_VALUE, 1.0f, 2*Float.MIN_VALUE}, |
|
426 |
||
427 |
// Make sure zero behavior is tested |
|
428 |
{0.0f, 0.0f, 0.0f}, |
|
429 |
{0.0f, -0.0f, -0.0f}, |
|
430 |
{-0.0f, 0.0f, 0.0f}, |
|
431 |
{-0.0f, -0.0f, -0.0f}, |
|
432 |
{0.0f, infinityF, Float.MIN_VALUE}, |
|
433 |
{0.0f, -infinityF, -Float.MIN_VALUE}, |
|
434 |
{-0.0f, infinityF, Float.MIN_VALUE}, |
|
435 |
{-0.0f, -infinityF, -Float.MIN_VALUE}, |
|
436 |
{0.0f, Float.MIN_VALUE, Float.MIN_VALUE}, |
|
437 |
{0.0f, -Float.MIN_VALUE, -Float.MIN_VALUE}, |
|
438 |
{-0.0f, Float.MIN_VALUE, Float.MIN_VALUE}, |
|
439 |
{-0.0f, -Float.MIN_VALUE, -Float.MIN_VALUE} |
|
440 |
}; |
|
441 |
||
442 |
for(int i = 0; i < testCases.length; i++) { |
|
443 |
failures += testNextAfterCase(testCases[i][0], testCases[i][1], |
|
444 |
testCases[i][2]); |
|
445 |
} |
|
446 |
||
447 |
return failures; |
|
448 |
} |
|
449 |
||
450 |
public static int testDoubleNextAfter() { |
|
451 |
int failures =0; |
|
452 |
||
453 |
/* |
|
454 |
* Each row of the testCases matrix represents one test case |
|
455 |
* for nexAfter; given the input of the first two columns, the |
|
456 |
* result in the last column is expected. |
|
457 |
*/ |
|
458 |
double [][] testCases = { |
|
459 |
{NaNd, NaNd, NaNd}, |
|
460 |
{NaNd, 0.0d, NaNd}, |
|
461 |
{0.0d, NaNd, NaNd}, |
|
462 |
{NaNd, infinityD, NaNd}, |
|
463 |
{infinityD, NaNd, NaNd}, |
|
464 |
||
465 |
{infinityD, infinityD, infinityD}, |
|
466 |
{infinityD, -infinityD, Double.MAX_VALUE}, |
|
467 |
{infinityD, 0.0d, Double.MAX_VALUE}, |
|
468 |
||
469 |
{Double.MAX_VALUE, infinityD, infinityD}, |
|
470 |
{Double.MAX_VALUE, -infinityD, Double_MAX_VALUEmm}, |
|
471 |
{Double.MAX_VALUE, Double.MAX_VALUE, Double.MAX_VALUE}, |
|
472 |
{Double.MAX_VALUE, 0.0d, Double_MAX_VALUEmm}, |
|
473 |
||
474 |
{Double_MAX_VALUEmm, Double.MAX_VALUE, Double.MAX_VALUE}, |
|
475 |
{Double_MAX_VALUEmm, infinityD, Double.MAX_VALUE}, |
|
476 |
{Double_MAX_VALUEmm, Double_MAX_VALUEmm, Double_MAX_VALUEmm}, |
|
477 |
||
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
478 |
{Double.MIN_NORMAL, infinityD, Double.MIN_NORMAL+ |
1826 | 479 |
Double.MIN_VALUE}, |
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
480 |
{Double.MIN_NORMAL, -infinityD, Double_MAX_SUBNORMAL}, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
481 |
{Double.MIN_NORMAL, 1.0f, Double.MIN_NORMAL+ |
1826 | 482 |
Double.MIN_VALUE}, |
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
483 |
{Double.MIN_NORMAL, -1.0f, Double_MAX_SUBNORMAL}, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
484 |
{Double.MIN_NORMAL, Double.MIN_NORMAL, Double.MIN_NORMAL}, |
1826 | 485 |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
486 |
{Double_MAX_SUBNORMAL, Double.MIN_NORMAL, Double.MIN_NORMAL}, |
1826 | 487 |
{Double_MAX_SUBNORMAL, Double_MAX_SUBNORMAL, Double_MAX_SUBNORMAL}, |
488 |
{Double_MAX_SUBNORMAL, 0.0d, Double_MAX_SUBNORMALmm}, |
|
489 |
||
490 |
{Double_MAX_SUBNORMALmm, Double_MAX_SUBNORMAL, Double_MAX_SUBNORMAL}, |
|
491 |
{Double_MAX_SUBNORMALmm, 0.0d, Double_MAX_SUBNORMALmm-Double.MIN_VALUE}, |
|
492 |
{Double_MAX_SUBNORMALmm, Double_MAX_SUBNORMALmm, Double_MAX_SUBNORMALmm}, |
|
493 |
||
494 |
{Double.MIN_VALUE, 0.0d, 0.0d}, |
|
495 |
{-Double.MIN_VALUE, 0.0d, -0.0d}, |
|
496 |
{Double.MIN_VALUE, Double.MIN_VALUE, Double.MIN_VALUE}, |
|
497 |
{Double.MIN_VALUE, 1.0f, 2*Double.MIN_VALUE}, |
|
498 |
||
499 |
// Make sure zero behavior is tested |
|
500 |
{0.0d, 0.0d, 0.0d}, |
|
501 |
{0.0d, -0.0d, -0.0d}, |
|
502 |
{-0.0d, 0.0d, 0.0d}, |
|
503 |
{-0.0d, -0.0d, -0.0d}, |
|
504 |
{0.0d, infinityD, Double.MIN_VALUE}, |
|
505 |
{0.0d, -infinityD, -Double.MIN_VALUE}, |
|
506 |
{-0.0d, infinityD, Double.MIN_VALUE}, |
|
507 |
{-0.0d, -infinityD, -Double.MIN_VALUE}, |
|
508 |
{0.0d, Double.MIN_VALUE, Double.MIN_VALUE}, |
|
509 |
{0.0d, -Double.MIN_VALUE, -Double.MIN_VALUE}, |
|
510 |
{-0.0d, Double.MIN_VALUE, Double.MIN_VALUE}, |
|
511 |
{-0.0d, -Double.MIN_VALUE, -Double.MIN_VALUE} |
|
512 |
}; |
|
513 |
||
514 |
for(int i = 0; i < testCases.length; i++) { |
|
515 |
failures += testNextAfterCase(testCases[i][0], testCases[i][1], |
|
516 |
testCases[i][2]); |
|
517 |
} |
|
518 |
return failures; |
|
519 |
} |
|
520 |
||
521 |
/* ******************** nextUp tests ********************************* */ |
|
522 |
||
523 |
public static int testFloatNextUp() { |
|
524 |
int failures=0; |
|
525 |
||
526 |
/* |
|
527 |
* Each row of testCases represents one test case for nextUp; |
|
528 |
* the first column is the input and the second column is the |
|
529 |
* expected result. |
|
530 |
*/ |
|
531 |
float testCases [][] = { |
|
532 |
{NaNf, NaNf}, |
|
533 |
{-infinityF, -Float.MAX_VALUE}, |
|
534 |
{-Float.MAX_VALUE, -Float_MAX_VALUEmm}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
535 |
{-Float.MIN_NORMAL, -Float_MAX_SUBNORMAL}, |
1826 | 536 |
{-Float_MAX_SUBNORMAL, -Float_MAX_SUBNORMALmm}, |
537 |
{-Float.MIN_VALUE, -0.0f}, |
|
538 |
{-0.0f, Float.MIN_VALUE}, |
|
539 |
{+0.0f, Float.MIN_VALUE}, |
|
540 |
{Float.MIN_VALUE, Float.MIN_VALUE*2}, |
|
541 |
{Float_MAX_SUBNORMALmm, Float_MAX_SUBNORMAL}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
542 |
{Float_MAX_SUBNORMAL, Float.MIN_NORMAL}, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
543 |
{Float.MIN_NORMAL, Float.MIN_NORMAL+Float.MIN_VALUE}, |
1826 | 544 |
{Float_MAX_VALUEmm, Float.MAX_VALUE}, |
545 |
{Float.MAX_VALUE, infinityF}, |
|
546 |
{infinityF, infinityF} |
|
547 |
}; |
|
548 |
||
549 |
for(int i = 0; i < testCases.length; i++) { |
|
550 |
failures+=Tests.test("Math.nextUp(float)", |
|
551 |
testCases[i][0], Math.nextUp(testCases[i][0]), testCases[i][1]); |
|
552 |
||
553 |
failures+=Tests.test("StrictMath.nextUp(float)", |
|
554 |
testCases[i][0], StrictMath.nextUp(testCases[i][0]), testCases[i][1]); |
|
555 |
} |
|
556 |
||
557 |
return failures; |
|
558 |
} |
|
559 |
||
560 |
||
561 |
public static int testDoubleNextUp() { |
|
562 |
int failures=0; |
|
563 |
||
564 |
/* |
|
565 |
* Each row of testCases represents one test case for nextUp; |
|
566 |
* the first column is the input and the second column is the |
|
567 |
* expected result. |
|
568 |
*/ |
|
569 |
double testCases [][] = { |
|
570 |
{NaNd, NaNd}, |
|
571 |
{-infinityD, -Double.MAX_VALUE}, |
|
572 |
{-Double.MAX_VALUE, -Double_MAX_VALUEmm}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
573 |
{-Double.MIN_NORMAL, -Double_MAX_SUBNORMAL}, |
1826 | 574 |
{-Double_MAX_SUBNORMAL, -Double_MAX_SUBNORMALmm}, |
575 |
{-Double.MIN_VALUE, -0.0d}, |
|
576 |
{-0.0d, Double.MIN_VALUE}, |
|
577 |
{+0.0d, Double.MIN_VALUE}, |
|
578 |
{Double.MIN_VALUE, Double.MIN_VALUE*2}, |
|
579 |
{Double_MAX_SUBNORMALmm, Double_MAX_SUBNORMAL}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
580 |
{Double_MAX_SUBNORMAL, Double.MIN_NORMAL}, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
581 |
{Double.MIN_NORMAL, Double.MIN_NORMAL+Double.MIN_VALUE}, |
1826 | 582 |
{Double_MAX_VALUEmm, Double.MAX_VALUE}, |
583 |
{Double.MAX_VALUE, infinityD}, |
|
584 |
{infinityD, infinityD} |
|
585 |
}; |
|
586 |
||
587 |
for(int i = 0; i < testCases.length; i++) { |
|
588 |
failures+=Tests.test("Math.nextUp(double)", |
|
589 |
testCases[i][0], Math.nextUp(testCases[i][0]), testCases[i][1]); |
|
590 |
||
591 |
failures+=Tests.test("StrictMath.nextUp(double)", |
|
592 |
testCases[i][0], StrictMath.nextUp(testCases[i][0]), testCases[i][1]); |
|
593 |
} |
|
594 |
||
595 |
return failures; |
|
596 |
} |
|
597 |
||
598 |
/* ******************** nextDown tests ********************************* */ |
|
599 |
||
600 |
public static int testFloatNextDown() { |
|
601 |
int failures=0; |
|
602 |
||
603 |
/* |
|
604 |
* Each row of testCases represents one test case for nextDown; |
|
605 |
* the first column is the input and the second column is the |
|
606 |
* expected result. |
|
607 |
*/ |
|
608 |
float testCases [][] = { |
|
609 |
{NaNf, NaNf}, |
|
610 |
{-infinityF, -infinityF}, |
|
611 |
{-Float.MAX_VALUE, -infinityF}, |
|
612 |
{-Float_MAX_VALUEmm, -Float.MAX_VALUE}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
613 |
{-Float_MAX_SUBNORMAL, -Float.MIN_NORMAL}, |
1826 | 614 |
{-Float_MAX_SUBNORMALmm, -Float_MAX_SUBNORMAL}, |
615 |
{-0.0f, -Float.MIN_VALUE}, |
|
616 |
{+0.0f, -Float.MIN_VALUE}, |
|
617 |
{Float.MIN_VALUE, 0.0f}, |
|
618 |
{Float.MIN_VALUE*2, Float.MIN_VALUE}, |
|
619 |
{Float_MAX_SUBNORMAL, Float_MAX_SUBNORMALmm}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
620 |
{Float.MIN_NORMAL, Float_MAX_SUBNORMAL}, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
621 |
{Float.MIN_NORMAL+ |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
622 |
Float.MIN_VALUE, Float.MIN_NORMAL}, |
1826 | 623 |
{Float.MAX_VALUE, Float_MAX_VALUEmm}, |
624 |
{infinityF, Float.MAX_VALUE}, |
|
625 |
}; |
|
626 |
||
627 |
for(int i = 0; i < testCases.length; i++) { |
|
10608 | 628 |
failures+=Tests.test("Math.nextDown(float)", |
629 |
testCases[i][0], Math.nextDown(testCases[i][0]), testCases[i][1]); |
|
630 |
||
631 |
failures+=Tests.test("StrictMath.nextDown(float)", |
|
632 |
testCases[i][0], StrictMath.nextDown(testCases[i][0]), testCases[i][1]); |
|
1826 | 633 |
} |
634 |
||
635 |
return failures; |
|
636 |
} |
|
637 |
||
638 |
||
639 |
public static int testDoubleNextDown() { |
|
640 |
int failures=0; |
|
641 |
||
642 |
/* |
|
643 |
* Each row of testCases represents one test case for nextDown; |
|
644 |
* the first column is the input and the second column is the |
|
645 |
* expected result. |
|
646 |
*/ |
|
647 |
double testCases [][] = { |
|
648 |
{NaNd, NaNd}, |
|
649 |
{-infinityD, -infinityD}, |
|
650 |
{-Double.MAX_VALUE, -infinityD}, |
|
651 |
{-Double_MAX_VALUEmm, -Double.MAX_VALUE}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
652 |
{-Double_MAX_SUBNORMAL, -Double.MIN_NORMAL}, |
1826 | 653 |
{-Double_MAX_SUBNORMALmm, -Double_MAX_SUBNORMAL}, |
654 |
{-0.0d, -Double.MIN_VALUE}, |
|
655 |
{+0.0d, -Double.MIN_VALUE}, |
|
656 |
{Double.MIN_VALUE, 0.0d}, |
|
657 |
{Double.MIN_VALUE*2, Double.MIN_VALUE}, |
|
658 |
{Double_MAX_SUBNORMAL, Double_MAX_SUBNORMALmm}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
659 |
{Double.MIN_NORMAL, Double_MAX_SUBNORMAL}, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
660 |
{Double.MIN_NORMAL+ |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
661 |
Double.MIN_VALUE, Double.MIN_NORMAL}, |
1826 | 662 |
{Double.MAX_VALUE, Double_MAX_VALUEmm}, |
663 |
{infinityD, Double.MAX_VALUE}, |
|
664 |
}; |
|
665 |
||
666 |
for(int i = 0; i < testCases.length; i++) { |
|
10608 | 667 |
failures+=Tests.test("Math.nextDown(double)", |
668 |
testCases[i][0], Math.nextDown(testCases[i][0]), testCases[i][1]); |
|
669 |
||
670 |
failures+=Tests.test("StrictMath.nextDown(double)", |
|
671 |
testCases[i][0], StrictMath.nextDown(testCases[i][0]), testCases[i][1]); |
|
1826 | 672 |
} |
673 |
||
674 |
return failures; |
|
675 |
} |
|
676 |
||
677 |
||
678 |
/* ********************** boolean tests ****************************** */ |
|
679 |
||
680 |
/* |
|
681 |
* Combined tests for boolean functions, isFinite, isInfinite, |
|
682 |
* isNaN, isUnordered. |
|
683 |
*/ |
|
684 |
||
685 |
public static int testFloatBooleanMethods() { |
|
686 |
int failures = 0; |
|
687 |
||
688 |
float testCases [] = { |
|
689 |
NaNf, |
|
690 |
-infinityF, |
|
691 |
infinityF, |
|
692 |
-Float.MAX_VALUE, |
|
693 |
-3.0f, |
|
694 |
-1.0f, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
695 |
-Float.MIN_NORMAL, |
1826 | 696 |
-Float_MAX_SUBNORMALmm, |
697 |
-Float_MAX_SUBNORMAL, |
|
698 |
-Float.MIN_VALUE, |
|
699 |
-0.0f, |
|
700 |
+0.0f, |
|
701 |
Float.MIN_VALUE, |
|
702 |
Float_MAX_SUBNORMALmm, |
|
703 |
Float_MAX_SUBNORMAL, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
704 |
Float.MIN_NORMAL, |
1826 | 705 |
1.0f, |
706 |
3.0f, |
|
707 |
Float_MAX_VALUEmm, |
|
708 |
Float.MAX_VALUE |
|
709 |
}; |
|
710 |
||
711 |
for(int i = 0; i < testCases.length; i++) { |
|
712 |
// isNaN |
|
22634 | 713 |
failures+=Tests.test("Float.isNaN(float)", testCases[i], |
714 |
Float.isNaN(testCases[i]), (i ==0)); |
|
1826 | 715 |
|
716 |
// isFinite |
|
10608 | 717 |
failures+=Tests.test("Float.isFinite(float)", testCases[i], |
718 |
Float.isFinite(testCases[i]), (i >= 3)); |
|
1826 | 719 |
|
720 |
// isInfinite |
|
22634 | 721 |
failures+=Tests.test("Float.isInfinite(float)", testCases[i], |
722 |
Float.isInfinite(testCases[i]), (i==1 || i==2)); |
|
1826 | 723 |
|
724 |
// isUnorderd |
|
725 |
for(int j = 0; j < testCases.length; j++) { |
|
22634 | 726 |
failures+=Tests.test("Tests.isUnordered(float, float)", testCases[i],testCases[j], |
727 |
Tests.isUnordered(testCases[i],testCases[j]), (i==0 || j==0)); |
|
1826 | 728 |
} |
729 |
} |
|
730 |
||
731 |
return failures; |
|
732 |
} |
|
733 |
||
734 |
public static int testDoubleBooleanMethods() { |
|
735 |
int failures = 0; |
|
736 |
boolean result = false; |
|
737 |
||
738 |
double testCases [] = { |
|
739 |
NaNd, |
|
740 |
-infinityD, |
|
741 |
infinityD, |
|
742 |
-Double.MAX_VALUE, |
|
743 |
-3.0d, |
|
744 |
-1.0d, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
745 |
-Double.MIN_NORMAL, |
1826 | 746 |
-Double_MAX_SUBNORMALmm, |
747 |
-Double_MAX_SUBNORMAL, |
|
748 |
-Double.MIN_VALUE, |
|
749 |
-0.0d, |
|
750 |
+0.0d, |
|
751 |
Double.MIN_VALUE, |
|
752 |
Double_MAX_SUBNORMALmm, |
|
753 |
Double_MAX_SUBNORMAL, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
754 |
Double.MIN_NORMAL, |
1826 | 755 |
1.0d, |
756 |
3.0d, |
|
757 |
Double_MAX_VALUEmm, |
|
758 |
Double.MAX_VALUE |
|
759 |
}; |
|
760 |
||
761 |
for(int i = 0; i < testCases.length; i++) { |
|
762 |
// isNaN |
|
22634 | 763 |
failures+=Tests.test("Double.isNaN(double)", testCases[i], |
764 |
Double.isNaN(testCases[i]), (i ==0)); |
|
1826 | 765 |
|
766 |
// isFinite |
|
10608 | 767 |
failures+=Tests.test("Double.isFinite(double)", testCases[i], |
768 |
Double.isFinite(testCases[i]), (i >= 3)); |
|
1826 | 769 |
|
770 |
// isInfinite |
|
22634 | 771 |
failures+=Tests.test("Double.isInfinite(double)", testCases[i], |
772 |
Double.isInfinite(testCases[i]), (i==1 || i==2)); |
|
1826 | 773 |
|
774 |
// isUnorderd |
|
775 |
for(int j = 0; j < testCases.length; j++) { |
|
22634 | 776 |
failures+=Tests.test("Tests.isUnordered(double, double)", testCases[i],testCases[j], |
777 |
Tests.isUnordered(testCases[i],testCases[j]), (i==0 || j==0)); |
|
1826 | 778 |
} |
779 |
} |
|
780 |
||
781 |
return failures; |
|
782 |
} |
|
783 |
||
784 |
/* ******************** copySign tests******************************** */ |
|
785 |
||
786 |
public static int testFloatCopySign() { |
|
787 |
int failures = 0; |
|
788 |
||
789 |
// testCases[0] are logically positive numbers; |
|
790 |
// testCases[1] are negative numbers. |
|
791 |
float testCases [][] = { |
|
792 |
{+0.0f, |
|
793 |
Float.MIN_VALUE, |
|
794 |
Float_MAX_SUBNORMALmm, |
|
795 |
Float_MAX_SUBNORMAL, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
796 |
Float.MIN_NORMAL, |
1826 | 797 |
1.0f, |
798 |
3.0f, |
|
799 |
Float_MAX_VALUEmm, |
|
800 |
Float.MAX_VALUE, |
|
801 |
infinityF, |
|
802 |
}, |
|
803 |
{-infinityF, |
|
804 |
-Float.MAX_VALUE, |
|
805 |
-3.0f, |
|
806 |
-1.0f, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
807 |
-Float.MIN_NORMAL, |
1826 | 808 |
-Float_MAX_SUBNORMALmm, |
809 |
-Float_MAX_SUBNORMAL, |
|
810 |
-Float.MIN_VALUE, |
|
811 |
-0.0f} |
|
812 |
}; |
|
813 |
||
814 |
float NaNs[] = {Float.intBitsToFloat(0x7fc00000), // "positive" NaN |
|
815 |
Float.intBitsToFloat(0xFfc00000)}; // "negative" NaN |
|
816 |
||
817 |
// Tests shared between raw and non-raw versions |
|
818 |
for(int i = 0; i < 2; i++) { |
|
819 |
for(int j = 0; j < 2; j++) { |
|
820 |
for(int m = 0; m < testCases[i].length; m++) { |
|
821 |
for(int n = 0; n < testCases[j].length; n++) { |
|
822 |
// copySign(magnitude, sign) |
|
823 |
failures+=Tests.test("Math.copySign(float,float)", |
|
824 |
testCases[i][m],testCases[j][n], |
|
825 |
Math.copySign(testCases[i][m], testCases[j][n]), |
|
826 |
(j==0?1.0f:-1.0f)*Math.abs(testCases[i][m]) ); |
|
827 |
||
828 |
failures+=Tests.test("StrictMath.copySign(float,float)", |
|
829 |
testCases[i][m],testCases[j][n], |
|
830 |
StrictMath.copySign(testCases[i][m], testCases[j][n]), |
|
831 |
(j==0?1.0f:-1.0f)*Math.abs(testCases[i][m]) ); |
|
832 |
} |
|
833 |
} |
|
834 |
} |
|
835 |
} |
|
836 |
||
837 |
// For rawCopySign, NaN may effectively have either sign bit |
|
838 |
// while for copySign NaNs are treated as if they always have |
|
839 |
// a zero sign bit (i.e. as positive numbers) |
|
840 |
for(int i = 0; i < 2; i++) { |
|
841 |
for(int j = 0; j < NaNs.length; j++) { |
|
842 |
for(int m = 0; m < testCases[i].length; m++) { |
|
843 |
// copySign(magnitude, sign) |
|
844 |
||
845 |
failures += (Math.abs(Math.copySign(testCases[i][m], NaNs[j])) == |
|
846 |
Math.abs(testCases[i][m])) ? 0:1; |
|
847 |
||
848 |
||
849 |
failures+=Tests.test("StrictMath.copySign(float,float)", |
|
850 |
testCases[i][m], NaNs[j], |
|
851 |
StrictMath.copySign(testCases[i][m], NaNs[j]), |
|
852 |
Math.abs(testCases[i][m]) ); |
|
853 |
} |
|
854 |
} |
|
855 |
} |
|
856 |
||
857 |
return failures; |
|
858 |
} |
|
859 |
||
860 |
public static int testDoubleCopySign() { |
|
861 |
int failures = 0; |
|
862 |
||
863 |
// testCases[0] are logically positive numbers; |
|
864 |
// testCases[1] are negative numbers. |
|
865 |
double testCases [][] = { |
|
866 |
{+0.0d, |
|
867 |
Double.MIN_VALUE, |
|
868 |
Double_MAX_SUBNORMALmm, |
|
869 |
Double_MAX_SUBNORMAL, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
870 |
Double.MIN_NORMAL, |
1826 | 871 |
1.0d, |
872 |
3.0d, |
|
873 |
Double_MAX_VALUEmm, |
|
874 |
Double.MAX_VALUE, |
|
875 |
infinityD, |
|
876 |
}, |
|
877 |
{-infinityD, |
|
878 |
-Double.MAX_VALUE, |
|
879 |
-3.0d, |
|
880 |
-1.0d, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
881 |
-Double.MIN_NORMAL, |
1826 | 882 |
-Double_MAX_SUBNORMALmm, |
883 |
-Double_MAX_SUBNORMAL, |
|
884 |
-Double.MIN_VALUE, |
|
885 |
-0.0d} |
|
886 |
}; |
|
887 |
||
888 |
double NaNs[] = {Double.longBitsToDouble(0x7ff8000000000000L), // "positive" NaN |
|
889 |
Double.longBitsToDouble(0xfff8000000000000L), // "negative" NaN |
|
890 |
Double.longBitsToDouble(0x7FF0000000000001L), |
|
891 |
Double.longBitsToDouble(0xFFF0000000000001L), |
|
892 |
Double.longBitsToDouble(0x7FF8555555555555L), |
|
893 |
Double.longBitsToDouble(0xFFF8555555555555L), |
|
894 |
Double.longBitsToDouble(0x7FFFFFFFFFFFFFFFL), |
|
895 |
Double.longBitsToDouble(0xFFFFFFFFFFFFFFFFL), |
|
896 |
Double.longBitsToDouble(0x7FFDeadBeef00000L), |
|
897 |
Double.longBitsToDouble(0xFFFDeadBeef00000L), |
|
898 |
Double.longBitsToDouble(0x7FFCafeBabe00000L), |
|
899 |
Double.longBitsToDouble(0xFFFCafeBabe00000L)}; |
|
900 |
||
901 |
// Tests shared between Math and StrictMath versions |
|
902 |
for(int i = 0; i < 2; i++) { |
|
903 |
for(int j = 0; j < 2; j++) { |
|
904 |
for(int m = 0; m < testCases[i].length; m++) { |
|
905 |
for(int n = 0; n < testCases[j].length; n++) { |
|
906 |
// copySign(magnitude, sign) |
|
907 |
failures+=Tests.test("MathcopySign(double,double)", |
|
908 |
testCases[i][m],testCases[j][n], |
|
909 |
Math.copySign(testCases[i][m], testCases[j][n]), |
|
910 |
(j==0?1.0f:-1.0f)*Math.abs(testCases[i][m]) ); |
|
911 |
||
912 |
failures+=Tests.test("StrictMath.copySign(double,double)", |
|
913 |
testCases[i][m],testCases[j][n], |
|
914 |
StrictMath.copySign(testCases[i][m], testCases[j][n]), |
|
915 |
(j==0?1.0f:-1.0f)*Math.abs(testCases[i][m]) ); |
|
916 |
} |
|
917 |
} |
|
918 |
} |
|
919 |
} |
|
920 |
||
921 |
// For Math.copySign, NaN may effectively have either sign bit |
|
922 |
// while for StrictMath.copySign NaNs are treated as if they |
|
923 |
// always have a zero sign bit (i.e. as positive numbers) |
|
924 |
for(int i = 0; i < 2; i++) { |
|
925 |
for(int j = 0; j < NaNs.length; j++) { |
|
926 |
for(int m = 0; m < testCases[i].length; m++) { |
|
927 |
// copySign(magnitude, sign) |
|
928 |
||
929 |
failures += (Math.abs(Math.copySign(testCases[i][m], NaNs[j])) == |
|
930 |
Math.abs(testCases[i][m])) ? 0:1; |
|
931 |
||
932 |
||
933 |
failures+=Tests.test("StrictMath.copySign(double,double)", |
|
934 |
testCases[i][m], NaNs[j], |
|
935 |
StrictMath.copySign(testCases[i][m], NaNs[j]), |
|
936 |
Math.abs(testCases[i][m]) ); |
|
937 |
} |
|
938 |
} |
|
939 |
} |
|
940 |
||
941 |
||
942 |
return failures; |
|
943 |
} |
|
944 |
||
945 |
/* ************************ scalb tests ******************************* */ |
|
946 |
||
947 |
static int testScalbCase(float value, int scale_factor, float expected) { |
|
948 |
int failures=0; |
|
949 |
||
950 |
failures+=Tests.test("Math.scalb(float,int)", |
|
951 |
value, scale_factor, |
|
952 |
Math.scalb(value, scale_factor), expected); |
|
953 |
||
954 |
failures+=Tests.test("Math.scalb(float,int)", |
|
955 |
-value, scale_factor, |
|
956 |
Math.scalb(-value, scale_factor), -expected); |
|
957 |
||
958 |
failures+=Tests.test("StrictMath.scalb(float,int)", |
|
959 |
value, scale_factor, |
|
960 |
StrictMath.scalb(value, scale_factor), expected); |
|
961 |
||
962 |
failures+=Tests.test("StrictMath.scalb(float,int)", |
|
963 |
-value, scale_factor, |
|
964 |
StrictMath.scalb(-value, scale_factor), -expected); |
|
965 |
return failures; |
|
966 |
} |
|
967 |
||
968 |
public static int testFloatScalb() { |
|
969 |
int failures=0; |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
970 |
int MAX_SCALE = Float.MAX_EXPONENT + -Float.MIN_EXPONENT + |
1826 | 971 |
FloatConsts.SIGNIFICAND_WIDTH + 1; |
972 |
||
973 |
||
974 |
// Arguments x, where scalb(x,n) is x for any n. |
|
975 |
float [] identityTestCases = {NaNf, |
|
976 |
-0.0f, |
|
977 |
+0.0f, |
|
978 |
infinityF, |
|
979 |
-infinityF |
|
980 |
}; |
|
981 |
||
982 |
float [] subnormalTestCases = { |
|
983 |
Float.MIN_VALUE, |
|
984 |
3.0f*Float.MIN_VALUE, |
|
985 |
Float_MAX_SUBNORMALmm, |
|
986 |
Float_MAX_SUBNORMAL |
|
987 |
}; |
|
988 |
||
989 |
float [] someTestCases = { |
|
990 |
Float.MIN_VALUE, |
|
991 |
3.0f*Float.MIN_VALUE, |
|
992 |
Float_MAX_SUBNORMALmm, |
|
993 |
Float_MAX_SUBNORMAL, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
994 |
Float.MIN_NORMAL, |
1826 | 995 |
1.0f, |
996 |
2.0f, |
|
997 |
3.0f, |
|
998 |
(float)Math.PI, |
|
999 |
Float_MAX_VALUEmm, |
|
1000 |
Float.MAX_VALUE |
|
1001 |
}; |
|
1002 |
||
1003 |
int [] oneMultiplyScalingFactors = { |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1004 |
Float.MIN_EXPONENT, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1005 |
Float.MIN_EXPONENT+1, |
1826 | 1006 |
-3, |
1007 |
-2, |
|
1008 |
-1, |
|
1009 |
0, |
|
1010 |
1, |
|
1011 |
2, |
|
1012 |
3, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1013 |
Float.MAX_EXPONENT-1, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1014 |
Float.MAX_EXPONENT |
1826 | 1015 |
}; |
1016 |
||
1017 |
int [] manyScalingFactors = { |
|
1018 |
Integer.MIN_VALUE, |
|
1019 |
Integer.MIN_VALUE+1, |
|
1020 |
-MAX_SCALE -1, |
|
1021 |
-MAX_SCALE, |
|
1022 |
-MAX_SCALE+1, |
|
1023 |
||
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1024 |
2*Float.MIN_EXPONENT-1, // -253 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1025 |
2*Float.MIN_EXPONENT, // -252 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1026 |
2*Float.MIN_EXPONENT+1, // -251 |
1826 | 1027 |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1028 |
Float.MIN_EXPONENT - FloatConsts.SIGNIFICAND_WIDTH, |
22634 | 1029 |
FloatConsts.MIN_SUB_EXPONENT, |
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1030 |
-Float.MAX_EXPONENT, // -127 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1031 |
Float.MIN_EXPONENT, // -126 |
1826 | 1032 |
|
1033 |
-2, |
|
1034 |
-1, |
|
1035 |
0, |
|
1036 |
1, |
|
1037 |
2, |
|
1038 |
||
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1039 |
Float.MAX_EXPONENT-1, // 126 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1040 |
Float.MAX_EXPONENT, // 127 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1041 |
Float.MAX_EXPONENT+1, // 128 |
1826 | 1042 |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1043 |
2*Float.MAX_EXPONENT-1, // 253 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1044 |
2*Float.MAX_EXPONENT, // 254 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1045 |
2*Float.MAX_EXPONENT+1, // 255 |
1826 | 1046 |
|
1047 |
MAX_SCALE-1, |
|
1048 |
MAX_SCALE, |
|
1049 |
MAX_SCALE+1, |
|
1050 |
Integer.MAX_VALUE-1, |
|
1051 |
Integer.MAX_VALUE |
|
1052 |
}; |
|
1053 |
||
1054 |
// Test cases where scaling is always a no-op |
|
1055 |
for(int i=0; i < identityTestCases.length; i++) { |
|
1056 |
for(int j=0; j < manyScalingFactors.length; j++) { |
|
1057 |
failures += testScalbCase(identityTestCases[i], |
|
1058 |
manyScalingFactors[j], |
|
1059 |
identityTestCases[i]); |
|
1060 |
} |
|
1061 |
} |
|
1062 |
||
1063 |
// Test cases where result is 0.0 or infinity due to magnitude |
|
1064 |
// of the scaling factor |
|
1065 |
for(int i=0; i < someTestCases.length; i++) { |
|
1066 |
for(int j=0; j < manyScalingFactors.length; j++) { |
|
1067 |
int scaleFactor = manyScalingFactors[j]; |
|
1068 |
if (Math.abs(scaleFactor) >= MAX_SCALE) { |
|
1069 |
float value = someTestCases[i]; |
|
1070 |
failures+=testScalbCase(value, |
|
1071 |
scaleFactor, |
|
10598
efd29b4b3e67
7091682: Move sun.misc.FpUtils code into java.lang.Math
darcy
parents:
5506
diff
changeset
|
1072 |
Math.copySign( (scaleFactor>0?infinityF:0.0f), value) ); |
1826 | 1073 |
} |
1074 |
} |
|
1075 |
} |
|
1076 |
||
1077 |
// Test cases that could be done with one floating-point |
|
1078 |
// multiply. |
|
1079 |
for(int i=0; i < someTestCases.length; i++) { |
|
1080 |
for(int j=0; j < oneMultiplyScalingFactors.length; j++) { |
|
1081 |
int scaleFactor = oneMultiplyScalingFactors[j]; |
|
1082 |
float value = someTestCases[i]; |
|
1083 |
||
1084 |
failures+=testScalbCase(value, |
|
1085 |
scaleFactor, |
|
1086 |
value*powerOfTwoF(scaleFactor)); |
|
1087 |
} |
|
1088 |
} |
|
1089 |
||
1090 |
// Create 2^MAX_EXPONENT |
|
1091 |
float twoToTheMaxExp = 1.0f; // 2^0 |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1092 |
for(int i = 0; i < Float.MAX_EXPONENT; i++) |
1826 | 1093 |
twoToTheMaxExp *=2.0f; |
1094 |
||
1095 |
// Scale-up subnormal values until they all overflow |
|
1096 |
for(int i=0; i < subnormalTestCases.length; i++) { |
|
1097 |
float scale = 1.0f; // 2^j |
|
1098 |
float value = subnormalTestCases[i]; |
|
1099 |
||
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1100 |
for(int j=Float.MAX_EXPONENT*2; j < MAX_SCALE; j++) { // MAX_SCALE -1 should cause overflow |
1826 | 1101 |
int scaleFactor = j; |
1102 |
||
1103 |
failures+=testScalbCase(value, |
|
1104 |
scaleFactor, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1105 |
(Tests.ilogb(value) +j > Float.MAX_EXPONENT ) ? |
10598
efd29b4b3e67
7091682: Move sun.misc.FpUtils code into java.lang.Math
darcy
parents:
5506
diff
changeset
|
1106 |
Math.copySign(infinityF, value) : // overflow |
1826 | 1107 |
// calculate right answer |
1108 |
twoToTheMaxExp*(twoToTheMaxExp*(scale*value)) ); |
|
1109 |
scale*=2.0f; |
|
1110 |
} |
|
1111 |
} |
|
1112 |
||
1113 |
// Scale down a large number until it underflows. By scaling |
|
1114 |
// down MAX_NORMALmm, the first subnormal result will be exact |
|
1115 |
// but the next one will round -- all those results can be |
|
1116 |
// checked by halving a separate value in the loop. Actually, |
|
1117 |
// we can keep halving and checking until the product is zero |
|
1118 |
// since: |
|
1119 |
// |
|
1120 |
// 1. If the scalb of MAX_VALUEmm is subnormal and *not* exact |
|
1121 |
// it will round *up* |
|
1122 |
// |
|
1123 |
// 2. When rounding first occurs in the expected product, it |
|
1124 |
// too rounds up, to 2^-MAX_EXPONENT. |
|
1125 |
// |
|
1126 |
// Halving expected after rounding happends to give the same |
|
1127 |
// result as the scalb operation. |
|
1128 |
float expected = Float_MAX_VALUEmm *0.5f; |
|
1129 |
for(int i = -1; i > -MAX_SCALE; i--) { |
|
1130 |
failures+=testScalbCase(Float_MAX_VALUEmm, i, expected); |
|
1131 |
||
1132 |
expected *= 0.5f; |
|
1133 |
} |
|
1134 |
||
1135 |
// Tricky rounding tests: |
|
1136 |
// Scale down a large number into subnormal range such that if |
|
1137 |
// scalb is being implemented with multiple floating-point |
|
1138 |
// multiplies, the value would round twice if the multiplies |
|
1139 |
// were done in the wrong order. |
|
1140 |
||
1141 |
float value = 0x8.0000bP-5f; |
|
1142 |
expected = 0x1.00001p-129f; |
|
1143 |
||
1144 |
for(int i = 0; i < 129; i++) { |
|
1145 |
failures+=testScalbCase(value, |
|
1146 |
-127-i, |
|
1147 |
expected); |
|
1148 |
value *=2.0f; |
|
1149 |
} |
|
1150 |
||
1151 |
return failures; |
|
1152 |
} |
|
1153 |
||
1154 |
static int testScalbCase(double value, int scale_factor, double expected) { |
|
1155 |
int failures=0; |
|
1156 |
||
1157 |
failures+=Tests.test("Math.scalb(double,int)", |
|
1158 |
value, scale_factor, |
|
1159 |
Math.scalb(value, scale_factor), expected); |
|
1160 |
||
1161 |
failures+=Tests.test("Math.scalb(double,int)", |
|
1162 |
-value, scale_factor, |
|
1163 |
Math.scalb(-value, scale_factor), -expected); |
|
1164 |
||
1165 |
failures+=Tests.test("StrictMath.scalb(double,int)", |
|
1166 |
value, scale_factor, |
|
1167 |
StrictMath.scalb(value, scale_factor), expected); |
|
1168 |
||
1169 |
failures+=Tests.test("StrictMath.scalb(double,int)", |
|
1170 |
-value, scale_factor, |
|
1171 |
StrictMath.scalb(-value, scale_factor), -expected); |
|
1172 |
||
1173 |
return failures; |
|
1174 |
} |
|
1175 |
||
1176 |
public static int testDoubleScalb() { |
|
1177 |
int failures=0; |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1178 |
int MAX_SCALE = Double.MAX_EXPONENT + -Double.MIN_EXPONENT + |
1826 | 1179 |
DoubleConsts.SIGNIFICAND_WIDTH + 1; |
1180 |
||
1181 |
||
1182 |
// Arguments x, where scalb(x,n) is x for any n. |
|
1183 |
double [] identityTestCases = {NaNd, |
|
1184 |
-0.0, |
|
1185 |
+0.0, |
|
1186 |
infinityD, |
|
1187 |
}; |
|
1188 |
||
1189 |
double [] subnormalTestCases = { |
|
1190 |
Double.MIN_VALUE, |
|
1191 |
3.0d*Double.MIN_VALUE, |
|
1192 |
Double_MAX_SUBNORMALmm, |
|
1193 |
Double_MAX_SUBNORMAL |
|
1194 |
}; |
|
1195 |
||
1196 |
double [] someTestCases = { |
|
1197 |
Double.MIN_VALUE, |
|
1198 |
3.0d*Double.MIN_VALUE, |
|
1199 |
Double_MAX_SUBNORMALmm, |
|
1200 |
Double_MAX_SUBNORMAL, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1201 |
Double.MIN_NORMAL, |
1826 | 1202 |
1.0d, |
1203 |
2.0d, |
|
1204 |
3.0d, |
|
1205 |
Math.PI, |
|
1206 |
Double_MAX_VALUEmm, |
|
1207 |
Double.MAX_VALUE |
|
1208 |
}; |
|
1209 |
||
1210 |
int [] oneMultiplyScalingFactors = { |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1211 |
Double.MIN_EXPONENT, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1212 |
Double.MIN_EXPONENT+1, |
1826 | 1213 |
-3, |
1214 |
-2, |
|
1215 |
-1, |
|
1216 |
0, |
|
1217 |
1, |
|
1218 |
2, |
|
1219 |
3, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1220 |
Double.MAX_EXPONENT-1, |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1221 |
Double.MAX_EXPONENT |
1826 | 1222 |
}; |
1223 |
||
1224 |
int [] manyScalingFactors = { |
|
1225 |
Integer.MIN_VALUE, |
|
1226 |
Integer.MIN_VALUE+1, |
|
1227 |
-MAX_SCALE -1, |
|
1228 |
-MAX_SCALE, |
|
1229 |
-MAX_SCALE+1, |
|
1230 |
||
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1231 |
2*Double.MIN_EXPONENT-1, // -2045 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1232 |
2*Double.MIN_EXPONENT, // -2044 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1233 |
2*Double.MIN_EXPONENT+1, // -2043 |
1826 | 1234 |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1235 |
Double.MIN_EXPONENT, // -1022 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1236 |
Double.MIN_EXPONENT - DoubleConsts.SIGNIFICAND_WIDTH, |
22634 | 1237 |
DoubleConsts.MIN_SUB_EXPONENT, |
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1238 |
-Double.MAX_EXPONENT, // -1023 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1239 |
Double.MIN_EXPONENT, // -1022 |
1826 | 1240 |
|
1241 |
-2, |
|
1242 |
-1, |
|
1243 |
0, |
|
1244 |
1, |
|
1245 |
2, |
|
1246 |
||
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1247 |
Double.MAX_EXPONENT-1, // 1022 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1248 |
Double.MAX_EXPONENT, // 1023 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1249 |
Double.MAX_EXPONENT+1, // 1024 |
1826 | 1250 |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1251 |
2*Double.MAX_EXPONENT-1, // 2045 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1252 |
2*Double.MAX_EXPONENT, // 2046 |
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1253 |
2*Double.MAX_EXPONENT+1, // 2047 |
1826 | 1254 |
|
1255 |
MAX_SCALE-1, |
|
1256 |
MAX_SCALE, |
|
1257 |
MAX_SCALE+1, |
|
1258 |
Integer.MAX_VALUE-1, |
|
1259 |
Integer.MAX_VALUE |
|
1260 |
}; |
|
1261 |
||
1262 |
// Test cases where scaling is always a no-op |
|
1263 |
for(int i=0; i < identityTestCases.length; i++) { |
|
1264 |
for(int j=0; j < manyScalingFactors.length; j++) { |
|
1265 |
failures += testScalbCase(identityTestCases[i], |
|
1266 |
manyScalingFactors[j], |
|
1267 |
identityTestCases[i]); |
|
1268 |
} |
|
1269 |
} |
|
1270 |
||
1271 |
// Test cases where result is 0.0 or infinity due to magnitude |
|
1272 |
// of the scaling factor |
|
1273 |
for(int i=0; i < someTestCases.length; i++) { |
|
1274 |
for(int j=0; j < manyScalingFactors.length; j++) { |
|
1275 |
int scaleFactor = manyScalingFactors[j]; |
|
1276 |
if (Math.abs(scaleFactor) >= MAX_SCALE) { |
|
1277 |
double value = someTestCases[i]; |
|
1278 |
failures+=testScalbCase(value, |
|
1279 |
scaleFactor, |
|
10598
efd29b4b3e67
7091682: Move sun.misc.FpUtils code into java.lang.Math
darcy
parents:
5506
diff
changeset
|
1280 |
Math.copySign( (scaleFactor>0?infinityD:0.0), value) ); |
1826 | 1281 |
} |
1282 |
} |
|
1283 |
} |
|
1284 |
||
1285 |
// Test cases that could be done with one floating-point |
|
1286 |
// multiply. |
|
1287 |
for(int i=0; i < someTestCases.length; i++) { |
|
1288 |
for(int j=0; j < oneMultiplyScalingFactors.length; j++) { |
|
1289 |
int scaleFactor = oneMultiplyScalingFactors[j]; |
|
1290 |
double value = someTestCases[i]; |
|
1291 |
||
1292 |
failures+=testScalbCase(value, |
|
1293 |
scaleFactor, |
|
1294 |
value*powerOfTwoD(scaleFactor)); |
|
1295 |
} |
|
1296 |
} |
|
1297 |
||
1298 |
// Create 2^MAX_EXPONENT |
|
1299 |
double twoToTheMaxExp = 1.0; // 2^0 |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1300 |
for(int i = 0; i < Double.MAX_EXPONENT; i++) |
1826 | 1301 |
twoToTheMaxExp *=2.0; |
1302 |
||
1303 |
// Scale-up subnormal values until they all overflow |
|
1304 |
for(int i=0; i < subnormalTestCases.length; i++) { |
|
1305 |
double scale = 1.0; // 2^j |
|
1306 |
double value = subnormalTestCases[i]; |
|
1307 |
||
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1308 |
for(int j=Double.MAX_EXPONENT*2; j < MAX_SCALE; j++) { // MAX_SCALE -1 should cause overflow |
1826 | 1309 |
int scaleFactor = j; |
1310 |
||
1311 |
failures+=testScalbCase(value, |
|
1312 |
scaleFactor, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1313 |
(Tests.ilogb(value) +j > Double.MAX_EXPONENT ) ? |
10598
efd29b4b3e67
7091682: Move sun.misc.FpUtils code into java.lang.Math
darcy
parents:
5506
diff
changeset
|
1314 |
Math.copySign(infinityD, value) : // overflow |
1826 | 1315 |
// calculate right answer |
1316 |
twoToTheMaxExp*(twoToTheMaxExp*(scale*value)) ); |
|
1317 |
scale*=2.0; |
|
1318 |
} |
|
1319 |
} |
|
1320 |
||
1321 |
// Scale down a large number until it underflows. By scaling |
|
1322 |
// down MAX_NORMALmm, the first subnormal result will be exact |
|
1323 |
// but the next one will round -- all those results can be |
|
1324 |
// checked by halving a separate value in the loop. Actually, |
|
1325 |
// we can keep halving and checking until the product is zero |
|
1326 |
// since: |
|
1327 |
// |
|
1328 |
// 1. If the scalb of MAX_VALUEmm is subnormal and *not* exact |
|
1329 |
// it will round *up* |
|
1330 |
// |
|
1331 |
// 2. When rounding first occurs in the expected product, it |
|
1332 |
// too rounds up, to 2^-MAX_EXPONENT. |
|
1333 |
// |
|
1334 |
// Halving expected after rounding happends to give the same |
|
1335 |
// result as the scalb operation. |
|
1336 |
double expected = Double_MAX_VALUEmm *0.5f; |
|
1337 |
for(int i = -1; i > -MAX_SCALE; i--) { |
|
1338 |
failures+=testScalbCase(Double_MAX_VALUEmm, i, expected); |
|
1339 |
||
1340 |
expected *= 0.5; |
|
1341 |
} |
|
1342 |
||
1343 |
// Tricky rounding tests: |
|
1344 |
// Scale down a large number into subnormal range such that if |
|
1345 |
// scalb is being implemented with multiple floating-point |
|
1346 |
// multiplies, the value would round twice if the multiplies |
|
1347 |
// were done in the wrong order. |
|
1348 |
||
1349 |
double value = 0x1.000000000000bP-1; |
|
1350 |
expected = 0x0.2000000000001P-1022; |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1351 |
for(int i = 0; i < Double.MAX_EXPONENT+2; i++) { |
1826 | 1352 |
failures+=testScalbCase(value, |
1353 |
-1024-i, |
|
1354 |
expected); |
|
1355 |
value *=2.0; |
|
1356 |
} |
|
1357 |
||
1358 |
return failures; |
|
1359 |
} |
|
1360 |
||
1361 |
/* ************************* ulp tests ******************************* */ |
|
1362 |
||
1363 |
||
1364 |
/* |
|
1365 |
* Test Math.ulp and StrictMath.ulp with +d and -d. |
|
1366 |
*/ |
|
1367 |
static int testUlpCase(float f, float expected) { |
|
1368 |
float minus_f = -f; |
|
1369 |
int failures=0; |
|
1370 |
||
1371 |
failures+=Tests.test("Math.ulp(float)", f, |
|
1372 |
Math.ulp(f), expected); |
|
1373 |
failures+=Tests.test("Math.ulp(float)", minus_f, |
|
1374 |
Math.ulp(minus_f), expected); |
|
1375 |
failures+=Tests.test("StrictMath.ulp(float)", f, |
|
1376 |
StrictMath.ulp(f), expected); |
|
1377 |
failures+=Tests.test("StrictMath.ulp(float)", minus_f, |
|
1378 |
StrictMath.ulp(minus_f), expected); |
|
1379 |
return failures; |
|
1380 |
} |
|
1381 |
||
1382 |
static int testUlpCase(double d, double expected) { |
|
1383 |
double minus_d = -d; |
|
1384 |
int failures=0; |
|
1385 |
||
1386 |
failures+=Tests.test("Math.ulp(double)", d, |
|
1387 |
Math.ulp(d), expected); |
|
1388 |
failures+=Tests.test("Math.ulp(double)", minus_d, |
|
1389 |
Math.ulp(minus_d), expected); |
|
1390 |
failures+=Tests.test("StrictMath.ulp(double)", d, |
|
1391 |
StrictMath.ulp(d), expected); |
|
1392 |
failures+=Tests.test("StrictMath.ulp(double)", minus_d, |
|
1393 |
StrictMath.ulp(minus_d), expected); |
|
1394 |
return failures; |
|
1395 |
} |
|
1396 |
||
1397 |
public static int testFloatUlp() { |
|
1398 |
int failures = 0; |
|
1399 |
float [] specialValues = {NaNf, |
|
1400 |
Float.POSITIVE_INFINITY, |
|
1401 |
+0.0f, |
|
1402 |
+1.0f, |
|
1403 |
+2.0f, |
|
1404 |
+16.0f, |
|
1405 |
+Float.MIN_VALUE, |
|
1406 |
+Float_MAX_SUBNORMAL, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1407 |
+Float.MIN_NORMAL, |
1826 | 1408 |
+Float.MAX_VALUE |
1409 |
}; |
|
1410 |
||
1411 |
float [] specialResults = {NaNf, |
|
1412 |
Float.POSITIVE_INFINITY, |
|
1413 |
Float.MIN_VALUE, |
|
1414 |
powerOfTwoF(-23), |
|
1415 |
powerOfTwoF(-22), |
|
1416 |
powerOfTwoF(-19), |
|
1417 |
Float.MIN_VALUE, |
|
1418 |
Float.MIN_VALUE, |
|
1419 |
Float.MIN_VALUE, |
|
1420 |
powerOfTwoF(104) |
|
1421 |
}; |
|
1422 |
||
1423 |
// Special value tests |
|
1424 |
for(int i = 0; i < specialValues.length; i++) { |
|
1425 |
failures += testUlpCase(specialValues[i], specialResults[i]); |
|
1426 |
} |
|
1427 |
||
1428 |
||
1429 |
// Normal exponent tests |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1430 |
for(int i = Float.MIN_EXPONENT; i <= Float.MAX_EXPONENT; i++) { |
1826 | 1431 |
float expected; |
1432 |
||
1433 |
// Create power of two |
|
1434 |
float po2 = powerOfTwoF(i); |
|
10598
efd29b4b3e67
7091682: Move sun.misc.FpUtils code into java.lang.Math
darcy
parents:
5506
diff
changeset
|
1435 |
expected = Math.scalb(1.0f, i - (FloatConsts.SIGNIFICAND_WIDTH-1)); |
1826 | 1436 |
|
1437 |
failures += testUlpCase(po2, expected); |
|
1438 |
||
1439 |
// Generate some random bit patterns for the significand |
|
1440 |
for(int j = 0; j < 10; j++) { |
|
1441 |
int randSignif = rand.nextInt(); |
|
1442 |
float randFloat; |
|
1443 |
||
1444 |
randFloat = Float.intBitsToFloat( // Exponent |
|
1445 |
(Float.floatToIntBits(po2)& |
|
1446 |
(~FloatConsts.SIGNIF_BIT_MASK)) | |
|
1447 |
// Significand |
|
1448 |
(randSignif & |
|
1449 |
FloatConsts.SIGNIF_BIT_MASK) ); |
|
1450 |
||
1451 |
failures += testUlpCase(randFloat, expected); |
|
1452 |
} |
|
1453 |
||
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1454 |
if (i > Float.MIN_EXPONENT) { |
10598
efd29b4b3e67
7091682: Move sun.misc.FpUtils code into java.lang.Math
darcy
parents:
5506
diff
changeset
|
1455 |
float po2minus = Math.nextAfter(po2, |
1826 | 1456 |
Float.NEGATIVE_INFINITY); |
1457 |
failures += testUlpCase(po2minus, expected/2.0f); |
|
1458 |
} |
|
1459 |
} |
|
1460 |
||
1461 |
// Subnormal tests |
|
1462 |
||
1463 |
/* |
|
1464 |
* Start with MIN_VALUE, left shift, test high value, low |
|
1465 |
* values, and random in between. |
|
1466 |
* |
|
1467 |
* Use nextAfter to calculate, high value of previous binade, |
|
1468 |
* loop count i will indicate how many random bits, if any are |
|
1469 |
* needed. |
|
1470 |
*/ |
|
1471 |
||
1472 |
float top=Float.MIN_VALUE; |
|
1473 |
for( int i = 1; |
|
1474 |
i < FloatConsts.SIGNIFICAND_WIDTH; |
|
1475 |
i++, top *= 2.0f) { |
|
1476 |
||
1477 |
failures += testUlpCase(top, Float.MIN_VALUE); |
|
1478 |
||
1479 |
// Test largest value in next smaller binade |
|
1480 |
if (i >= 3) {// (i == 1) would test 0.0; |
|
1481 |
// (i == 2) would just retest MIN_VALUE |
|
10598
efd29b4b3e67
7091682: Move sun.misc.FpUtils code into java.lang.Math
darcy
parents:
5506
diff
changeset
|
1482 |
testUlpCase(Math.nextAfter(top, 0.0f), |
1826 | 1483 |
Float.MIN_VALUE); |
1484 |
||
1485 |
if( i >= 10) { |
|
1486 |
// create a bit mask with (i-1) 1's in the low order |
|
1487 |
// bits |
|
1488 |
int mask = ~((~0)<<(i-1)); |
|
1489 |
float randFloat = Float.intBitsToFloat( // Exponent |
|
1490 |
Float.floatToIntBits(top) | |
|
1491 |
// Significand |
|
1492 |
(rand.nextInt() & mask ) ) ; |
|
1493 |
||
1494 |
failures += testUlpCase(randFloat, Float.MIN_VALUE); |
|
1495 |
} |
|
1496 |
} |
|
1497 |
} |
|
1498 |
||
1499 |
return failures; |
|
1500 |
} |
|
1501 |
||
1502 |
public static int testDoubleUlp() { |
|
1503 |
int failures = 0; |
|
1504 |
double [] specialValues = {NaNd, |
|
1505 |
Double.POSITIVE_INFINITY, |
|
1506 |
+0.0d, |
|
1507 |
+1.0d, |
|
1508 |
+2.0d, |
|
1509 |
+16.0d, |
|
1510 |
+Double.MIN_VALUE, |
|
1511 |
+Double_MAX_SUBNORMAL, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1512 |
+Double.MIN_NORMAL, |
1826 | 1513 |
+Double.MAX_VALUE |
1514 |
}; |
|
1515 |
||
1516 |
double [] specialResults = {NaNf, |
|
1517 |
Double.POSITIVE_INFINITY, |
|
1518 |
Double.MIN_VALUE, |
|
1519 |
powerOfTwoD(-52), |
|
1520 |
powerOfTwoD(-51), |
|
1521 |
powerOfTwoD(-48), |
|
1522 |
Double.MIN_VALUE, |
|
1523 |
Double.MIN_VALUE, |
|
1524 |
Double.MIN_VALUE, |
|
1525 |
powerOfTwoD(971) |
|
1526 |
}; |
|
1527 |
||
1528 |
// Special value tests |
|
1529 |
for(int i = 0; i < specialValues.length; i++) { |
|
1530 |
failures += testUlpCase(specialValues[i], specialResults[i]); |
|
1531 |
} |
|
1532 |
||
1533 |
||
1534 |
// Normal exponent tests |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1535 |
for(int i = Double.MIN_EXPONENT; i <= Double.MAX_EXPONENT; i++) { |
1826 | 1536 |
double expected; |
1537 |
||
1538 |
// Create power of two |
|
1539 |
double po2 = powerOfTwoD(i); |
|
10598
efd29b4b3e67
7091682: Move sun.misc.FpUtils code into java.lang.Math
darcy
parents:
5506
diff
changeset
|
1540 |
expected = Math.scalb(1.0, i - (DoubleConsts.SIGNIFICAND_WIDTH-1)); |
1826 | 1541 |
|
1542 |
failures += testUlpCase(po2, expected); |
|
1543 |
||
1544 |
// Generate some random bit patterns for the significand |
|
1545 |
for(int j = 0; j < 10; j++) { |
|
1546 |
long randSignif = rand.nextLong(); |
|
1547 |
double randDouble; |
|
1548 |
||
1549 |
randDouble = Double.longBitsToDouble( // Exponent |
|
1550 |
(Double.doubleToLongBits(po2)& |
|
1551 |
(~DoubleConsts.SIGNIF_BIT_MASK)) | |
|
1552 |
// Significand |
|
1553 |
(randSignif & |
|
1554 |
DoubleConsts.SIGNIF_BIT_MASK) ); |
|
1555 |
||
1556 |
failures += testUlpCase(randDouble, expected); |
|
1557 |
} |
|
1558 |
||
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1559 |
if (i > Double.MIN_EXPONENT) { |
10598
efd29b4b3e67
7091682: Move sun.misc.FpUtils code into java.lang.Math
darcy
parents:
5506
diff
changeset
|
1560 |
double po2minus = Math.nextAfter(po2, |
1826 | 1561 |
Double.NEGATIVE_INFINITY); |
1562 |
failures += testUlpCase(po2minus, expected/2.0f); |
|
1563 |
} |
|
1564 |
} |
|
1565 |
||
1566 |
// Subnormal tests |
|
1567 |
||
1568 |
/* |
|
1569 |
* Start with MIN_VALUE, left shift, test high value, low |
|
1570 |
* values, and random in between. |
|
1571 |
* |
|
1572 |
* Use nextAfter to calculate, high value of previous binade, |
|
1573 |
* loop count i will indicate how many random bits, if any are |
|
1574 |
* needed. |
|
1575 |
*/ |
|
1576 |
||
1577 |
double top=Double.MIN_VALUE; |
|
1578 |
for( int i = 1; |
|
1579 |
i < DoubleConsts.SIGNIFICAND_WIDTH; |
|
1580 |
i++, top *= 2.0f) { |
|
1581 |
||
1582 |
failures += testUlpCase(top, Double.MIN_VALUE); |
|
1583 |
||
1584 |
// Test largest value in next smaller binade |
|
1585 |
if (i >= 3) {// (i == 1) would test 0.0; |
|
1586 |
// (i == 2) would just retest MIN_VALUE |
|
10598
efd29b4b3e67
7091682: Move sun.misc.FpUtils code into java.lang.Math
darcy
parents:
5506
diff
changeset
|
1587 |
testUlpCase(Math.nextAfter(top, 0.0f), |
1826 | 1588 |
Double.MIN_VALUE); |
1589 |
||
1590 |
if( i >= 10) { |
|
1591 |
// create a bit mask with (i-1) 1's in the low order |
|
1592 |
// bits |
|
1593 |
int mask = ~((~0)<<(i-1)); |
|
1594 |
double randDouble = Double.longBitsToDouble( // Exponent |
|
1595 |
Double.doubleToLongBits(top) | |
|
1596 |
// Significand |
|
1597 |
(rand.nextLong() & mask ) ) ; |
|
1598 |
||
1599 |
failures += testUlpCase(randDouble, Double.MIN_VALUE); |
|
1600 |
} |
|
1601 |
} |
|
1602 |
} |
|
1603 |
||
1604 |
return failures; |
|
1605 |
} |
|
1606 |
||
1607 |
public static int testFloatSignum() { |
|
1608 |
int failures = 0; |
|
1609 |
float testCases [][] = { |
|
1610 |
{NaNf, NaNf}, |
|
1611 |
{-infinityF, -1.0f}, |
|
1612 |
{-Float.MAX_VALUE, -1.0f}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1613 |
{-Float.MIN_NORMAL, -1.0f}, |
1826 | 1614 |
{-1.0f, -1.0f}, |
1615 |
{-2.0f, -1.0f}, |
|
1616 |
{-Float_MAX_SUBNORMAL, -1.0f}, |
|
1617 |
{-Float.MIN_VALUE, -1.0f}, |
|
1618 |
{-0.0f, -0.0f}, |
|
1619 |
{+0.0f, +0.0f}, |
|
1620 |
{Float.MIN_VALUE, 1.0f}, |
|
1621 |
{Float_MAX_SUBNORMALmm, 1.0f}, |
|
1622 |
{Float_MAX_SUBNORMAL, 1.0f}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1623 |
{Float.MIN_NORMAL, 1.0f}, |
1826 | 1624 |
{1.0f, 1.0f}, |
1625 |
{2.0f, 1.0f}, |
|
1626 |
{Float_MAX_VALUEmm, 1.0f}, |
|
1627 |
{Float.MAX_VALUE, 1.0f}, |
|
1628 |
{infinityF, 1.0f} |
|
1629 |
}; |
|
1630 |
||
1631 |
for(int i = 0; i < testCases.length; i++) { |
|
1632 |
failures+=Tests.test("Math.signum(float)", |
|
1633 |
testCases[i][0], Math.signum(testCases[i][0]), testCases[i][1]); |
|
1634 |
failures+=Tests.test("StrictMath.signum(float)", |
|
1635 |
testCases[i][0], StrictMath.signum(testCases[i][0]), testCases[i][1]); |
|
1636 |
} |
|
1637 |
||
1638 |
return failures; |
|
1639 |
} |
|
1640 |
||
1641 |
public static int testDoubleSignum() { |
|
1642 |
int failures = 0; |
|
1643 |
double testCases [][] = { |
|
1644 |
{NaNd, NaNd}, |
|
1645 |
{-infinityD, -1.0}, |
|
1646 |
{-Double.MAX_VALUE, -1.0}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1647 |
{-Double.MIN_NORMAL, -1.0}, |
1826 | 1648 |
{-1.0, -1.0}, |
1649 |
{-2.0, -1.0}, |
|
1650 |
{-Double_MAX_SUBNORMAL, -1.0}, |
|
1651 |
{-Double.MIN_VALUE, -1.0d}, |
|
1652 |
{-0.0d, -0.0d}, |
|
1653 |
{+0.0d, +0.0d}, |
|
1654 |
{Double.MIN_VALUE, 1.0}, |
|
1655 |
{Double_MAX_SUBNORMALmm, 1.0}, |
|
1656 |
{Double_MAX_SUBNORMAL, 1.0}, |
|
26197
1bb6b68b87cd
8042003: Update java/lang/Math tests to eliminate dependency on sun.misc.DoubleConsts and sun.misc.FloatConsts
mchung
parents:
22634
diff
changeset
|
1657 |
{Double.MIN_NORMAL, 1.0}, |
1826 | 1658 |
{1.0, 1.0}, |
1659 |
{2.0, 1.0}, |
|
1660 |
{Double_MAX_VALUEmm, 1.0}, |
|
1661 |
{Double.MAX_VALUE, 1.0}, |
|
1662 |
{infinityD, 1.0} |
|
1663 |
}; |
|
1664 |
||
1665 |
for(int i = 0; i < testCases.length; i++) { |
|
1666 |
failures+=Tests.test("Math.signum(double)", |
|
1667 |
testCases[i][0], Math.signum(testCases[i][0]), testCases[i][1]); |
|
1668 |
failures+=Tests.test("StrictMath.signum(double)", |
|
1669 |
testCases[i][0], StrictMath.signum(testCases[i][0]), testCases[i][1]); |
|
1670 |
} |
|
1671 |
||
1672 |
return failures; |
|
1673 |
} |
|
1674 |
||
1675 |
||
1676 |
public static void main(String argv[]) { |
|
1677 |
int failures = 0; |
|
1678 |
||
1679 |
failures += testFloatGetExponent(); |
|
1680 |
failures += testDoubleGetExponent(); |
|
1681 |
||
1682 |
failures += testFloatNextAfter(); |
|
1683 |
failures += testDoubleNextAfter(); |
|
1684 |
||
1685 |
failures += testFloatNextUp(); |
|
1686 |
failures += testDoubleNextUp(); |
|
1687 |
||
1688 |
failures += testFloatNextDown(); |
|
1689 |
failures += testDoubleNextDown(); |
|
1690 |
||
1691 |
failures += testFloatBooleanMethods(); |
|
1692 |
failures += testDoubleBooleanMethods(); |
|
1693 |
||
1694 |
failures += testFloatCopySign(); |
|
1695 |
failures += testDoubleCopySign(); |
|
1696 |
||
1697 |
failures += testFloatScalb(); |
|
1698 |
failures += testDoubleScalb(); |
|
1699 |
||
1700 |
failures += testFloatUlp(); |
|
1701 |
failures += testDoubleUlp(); |
|
1702 |
||
1703 |
failures += testFloatSignum(); |
|
1704 |
failures += testDoubleSignum(); |
|
1705 |
||
1706 |
if (failures > 0) { |
|
1707 |
System.err.println("Testing the recommended functions incurred " |
|
1708 |
+ failures + " failures."); |
|
1709 |
throw new RuntimeException(); |
|
1710 |
} |
|
1711 |
} |
|
1712 |
} |